A device that produces electricity by transformin-on;z/ dm. 2y glm3+dpf tma7dg chemical energy into electrical energy is calledtl3d;2za7m. pdnmm- gy/ fod+ a

  A car battery

  The total amount of charge that pr. mrp72ls +aqasses through a wire's full cross section at any poin+qpr2. slm7ra t per unit of time is referred to as

  The direction of convention current is taken to be the directico 22b p/din8-o1l hexon that

  A coulomb per second is the saoimg3hv eu:e8q8 8jy8 me as

  Car batteries are rated in "amp-hours." This is a mealy vs2n (jtv +9cg*+c 4h6 v:cbh3e0amdvw gk2sure of their

  The resistance of a 3 *cuepq 3o6w aq2/momwire is defined as

  What is $1 \; \Omega$ equivalent to?

  The resistance of a wire is v:;r4: eilxdn

  The resistivity of awg )p9 w80hrjvvay7*y wire depends on

  Which conducting material has the lowest resistivity j(vd-b cvx.)ee4(kewan 4kdt f9)f*t value?

  Consider two copper wires. fizka6h. i6cw qp.gpp)i8j11One has twice the length of the other. How do the resi ajpqw6p1c g ipik1i..6z )8fhstivities of these two wires compare?

  Consider two copper wires. One has twice the length of the other. How do a ,izm2u0 (g-v7yprl ithe resistances of these twi0(gza uy-l7,i m2vr po wires compare?

  Consider two copper wires.gw-xzyc4 /tj0 One has twice the cross-sectional area of the other. How do the re/w-t gyc0z jx4sistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice time:8 cup*x5 the cross-sectional area of the other. How do the re pt *5e8ciumx:sistances of these two wires compare?

  The length of a wire ishs,pz7 q 13* cgbv*rvsdx kydr x5-1n( doubled and the radius is doubled. By what factor does the r 1xc53b kqsh v7 xy-d*drgzr nv1,*(spesistance change?

  How much more resistance does a 1.02ke;6qvsj o b/ cm diameter rod have compared to a 2.0 cm diameter rod of theqve6k /sb ;o2j same length and made of the same material?

  The resistivity of most common meqd*3)3zg6xyr re 9utuxm7 ;artals

  Negative temperature coefficients of resck; :qf3t8avtistivity

  What is 1 W equivalent to?;,q hyghhsou- ;*+ujl

  A kilowatt-hour is equivale9v9/j(wi7-dkvl fve7 dc)ns+ g9uegynt to

  If the resistance in a constant vb7g/fx7 x1(v unxuu: eoltage circuit is doubled, the power dissipated by that cug/e b17xxun vx:7(fuircuit will

  If the voltage across a circuit of constant resista *4 liskk.jpc6nce is doubled, the power dissipated by that ic4.*p6 jk lskcircuit will

  If the resistance in a circuit witfsae7 0gr 4iv oht2iy319i+nnh constant current flowing is doubled, the power dissipated by that circuit wi2ii0h 1+vnyat nof3 s7egri9 4ll

  If the current flowing through a circuit of constant resistance is doubled, the m 9) txtg4b**k:gdgzipower dissipa9xt 4*kbggzg: *)m dtited by that circuit will

  During a power demand, the voltage output is reduced by 5.0%. By cl4t( z uzcrsf2:(ohd,y9il ( what percentage is the pz cy tz(h,f4(clo 9(ls2di:ruower on a resistor affected?

  A current that is sinusoidal with respect to time is refuh4 u 1e8yxv p8oc- x24itij5perred to as

  Consider two copper wires each carrying a curren*b)w(d c(3wtb,*i ovvot b 4wit of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to tha ,()4*owcio( *vwbt ivb3wdtbt in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero ngw, zn:xbd.j e+ck6gq.7cz + z*iej3 at very low temperaturesw jg z .:k7c+,x cinzz+.6g*jdnqb ee3 are referred to as

  What current is flowing if 0.67 C of cz9g z 6iwzz1-5oo(l w:zga.p8aqkd 3yharge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 min. w;o7nfb- vh,b What is the a; wbb,-nhfo 7vverage current?

  How much charge must pass by a point in 10 s forq m5-kd(xk/ asrku 5q7 bsl-6r the current to be 0.50 A?

  A total of $2.0 \times 10^{13} \; protons$ pass a given point in 15 s. What is the current?

  What current is flowi:j iopf 7k22gcw5d z2ing if $4.0 \times 10^{16} \; electrons$ pass a point in 0.50 s?

  If $3.0 \times 10^{15} \; electrons$ flow through a section of a wire of diameter 2.0 mm in 4.0 s, what is the current in the wire?

  A coffee maker, which draws 13.5 A of current, has been left u qu:2msa4*t ton for 10 min. What is the net number of electrons that have passed thrm4 uq :tat2*usough the coffee maker?

  In an electroplating process, it is desired u*jc2 m0zl-jc hg-0vpzrs 08pto deposit 40 mg of silver on a metal part bp-*zhsm v2c8z 0jj lp0u0cr-g y using a current of 2.0 A. How long must the current be allowed to run to deposit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cau-d4 d euaqlki(3ar-b-se 4.00 A to flow through a resistance ofrl --dqk 4db3(aeuai- 330 W?

  What is the voltage across a 5.0-W resistor if the current through it ic(n n(abl)1h8gks5 fjs 5.0 A?

  A 4000-W resistor is connected .0,h uhi qvz)vacross 220 V. What current will flow?

  A light bulb operating / (8(d.pjzzppjrt m g(at 110 V draws 1.40 A of current. What is its resistance/g.pdzpzjt( jrm ( 8p(?

  A 12-V battery is connected to a 100-W resistor. How many electrons flow throuf2s 9d m3kymheft -x45gh the wire t-f fhm9ysed 5 k4xm32in
1.0 min?

  What is the resistance of 1 6f s ,nxr2zn:0dzxxs..0 m copper wire of diameter 0.40 inch? (The resistivity of cd nfzxs :zn.rs02x6,xopper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 m long, if hct6ocy*qc: w, tz2 2lthe resistivity clch t z 2co,q2*w6:tyis $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (rely-2(um o /k :gwj+hyd76rx))nutid osistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistiu1jb m8d17 isvvity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures 0.040 ohms. Wyl9 cx(gf(if2wnh (u h 1ae00lhat is its resistivity?

  Calculate the current through a 10.0-m lonafn/za 7x9 y1spki.oql m170eg 22 gauge (the radius is 0.321 mm) nichrome wirnk/.e7xf1s1q lmia79oy pa0 ze if it is connected to a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 cm x 2.0 cmrtsvperlp(l*5e6 6 t -. What is the voltage drop along its length when it carries 4000 A? (The resistivity of v p*tsl66-ep tr rle5(copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of 0.50 mm and a resismnklylx:f g4f9c 06m(.qh r) ztivity of $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copper wire (resist 45r:ko; aanayivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a r: mlg9lx8suc: (je r/lesistance of $18 \Omega$ at a temperature of $20 ^{\circ}C$. What is its resistance at a temperature of $120 ^{\circ}C$? (The temperature coefficient of resistivity for carbon is $-5.0 \times 10^{-4} /^{\circ}C$.)

  The temperature coefxrj r:z79p4en8q c(k r/w0 xjnficient of resistivity of platinum is $3.9 \times 10^{-3} /^{\circ}C$. If a platinum wire has a resistance of R at room temperature ($23 ^{\circ}C$), to what temperature must it be heated in order to double its resistance to 2R?

  A platinum wire is used to determine the melting point of indium. The my1z py4-i+zfn u3ep4 resistance of the pl 4e -pzumzy+43p nyf1iatinum wire is $2.000 \; \Omega$ at $20 ^{\circ}C$ and increases to $3.072 \; \Omega$ as indium starts to melt. What is the melting point of indium? (The temperature coefficient of resistivity for platinum is $3.9 \times 10^{-3} /^{\circ}C$.)

  5.00 A is flowing through an km - htr 2ad/rf ;npkcb5c+*c5$10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it jyi eme)7drz) 1-c:dmxs*uz5 bx ,mbhyec ://draw?

  A 150-W light bulb running on 110 Vbz3 o.udgf+;v draws how much current?

  What is the nominal resistance of a 100-W light bulb desi f:1tr;do+13ljh af kg;d0fw ugned to be used in a 120-V c3or1 :ufdf1t ;0+h; dgakj lfwircuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heati1l+ wlj 7xlhd(vs,w ;wng elemen(w jdhw+w,1vl7ls ;lxt?

  A 200-W resistor is ratd/bj v1 qg8y dbvz4/q/ed at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratedncjd .3,mt+q*lc hj8dbcq6q2 at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does it drp7bk 4d*bcql ;aw?

  A lamp uses a 150-W bulb. If it is used at 120 le3u67u j(-lgx 9q dqfjv9l s4V, what is its resistance?

  A 25-W soldering iron runs or mbc r)we1 f1qo/xtk+ yg-)c ;gn9nr1n 110 V. What is its resistance?

  How much does it cost to operate a 25-W solderinx3kclnax(ko fi+2q 8y ngy;io9.s5o2. ccc 4eg iron for 8.0 hours, if energy csof g +qx5(.oki ky l n32;nio8y2aec.ccxc49osts $0.08/kWh?

  How much energy does a b ( g7xttuw2uji)dc0 zqh:1d)pp4/sr 100-W light bulb use in 8.0 hours?

  A 1500-W heater is conn: g0k 8 :kal)/syyuhpwected to a 120-V line for 2.0 hours. How much heat energy is produced 80:a/sh:yul)wy g pkk?

  A battery is rated at 1szce/+v9eyv/ 0sf 1nr7cye8 c 2 V and 160 A-h. How much energy does the battery store?n y ycfccvee z0s+e/8s 17/9vr

  How much energy does a 25-W soldering iron use gmn5: l 1+:z uwzu+lhjin 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per dao ko,k/,7 bnzay. Assuming the power company charges 10 cents for each kilowatt-hour of elect,7a /book, nkzricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (com,rxbkcn +- qm1puter plus monitor) is turned on 8.0 hours per day. If electricity m+cn kbxq1,r-costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a central n*) brs6xo; dxair-conditioning unit for 2.0 hr/day at 5000 W, and a seriex;sb 6 onx)*drs connection of ten 60 W light bulbs for 5.0 hr/day. How much did these items contribute to the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operaq+i-*jdpc zo.tes on 240 V and generates heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the owner shortens the Nichrome wire by 10%. (Assume the temperature is unchanged. In reality, the resistivity of the wire will depend on its t -pzco ij.dq*+emperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows thr) a+8 v8 o4ncxpck91ai0id oitough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs /qkli*1 cck 1usu,1fl $1.49, and will run a portable CD player for 6.0 hours. Suppose the battery supplies a current of 25 mA to the player. What is the cost of energy in dollars per kWh?

  A motor that can do work at the rate of 2.0 hp has 60% efficiency. How gx;(d7q1p m fgmuch current does it draw fm; q1dfxg7g(prom a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to aejw zxa:5 ; b/w2g.hmv 120-V ac power source. What rms current flows through this :wb vexm5ah; /w. zj2gdevice?

  A 500-W device is connect;mlr vgk;-wv6p 7 fl1bed to a 120-V ac power source. What peak current flows through thil-p1bvwmfk g;vr 76 l;s device?

  A 500-W device is connected to a 120-V ac power soisnr m3p99 b;/gusl-9vt9lb iurce. What is the peak voltage across this device9nrlbis9i3bpt-;lg9/s umv 9 ?

  The diameter of a copper wire is 0.081 inch. The 4dxn,oudcx1c qlr8f3 84d. jpmaximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift velocity of the electrons? (The numbecndcuxd, 4flx 8qp. d38 or4j1r of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)